# how2: AI for your Terminal


how2 finds the simplest way to do something in a unix shell.
It's like `man`, but you can query it in natural language. It uses a mix of AI code-completion and StackOverflow search.

It effectively replaces Chrome => New Tab => Google => Click on StackOverflow => Scroll Down to first answer.

Go to [how2terminal.com](https://how2terminal.com) for more info.

![how2 AI for the Command-Line](https://raw.githubusercontent.com/santinic/how2/master/img/short2.png)


# Demo video
https://user-images.githubusercontent.com/179558/196452157-60e6b33a-116d-46f2-a441-7d0696a31452.mp4

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# Install
## MacOSX (via HowBrew):

```
brew tap how2terminal/how2
brew install how2
```

## With NPM:

```
sudo npm install -g how2
```

If you install it without `sudo`, then you have to run it with `npx how2` or alias the command manually.


## Ubuntu/Debian:

[Download latest .deb](https://github.com/santinic/how2/releases/latest/) and then run:
    

```
wget how2terminal.com/how2.deb
sudo dpkg -i how2.deb
```

## Binaries:
    
[Go to the latest release](https://github.com/santinic/how2/releases/latest/) and download the binaries.


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# Usage
By default, how2 uses an external AI server to find the best unix command line suggestion.
If you add the `-s` option instead, it will search StackOverflow for an answer.

![how2 AI and StackOverflow mode](https://raw.githubusercontent.com/santinic/how2/master/img/modes.png)

![how2 -s example](https://raw.githubusercontent.com/santinic/how2/master/img/s.png)

After that you can press SPACE to go to the interactive mode, where you can choose a different stackoverflow question/answer.

![how2 interactive mode](https://raw.githubusercontent.com/santinic/how2/master/img/interactive.png)

![how2 interactive mode 2](https://raw.githubusercontent.com/santinic/how2/master/img/interactive2.png)


[//]: # (You can use `-l lang` to find answers for other languages:)
[//]: # (![-l python]&#40;https://raw.githubusercontent.com/santinic/how2/master/img/python.png&#41;)


## How does it work?
Behind the curtain, the API use a couple of AI code-completion models
retrained on Bash/Powershell commands. 
This is just the beginning, we are working on retraining the models to focus on the Command-Line experience.
Currently, the AI mode is free for everybody up to 5 requests per day. 
If you are a professional user [consider upgrading to a paid subscription](https://how2terminal.com/pricing).


## How well does it work?
It is surprisingly useful once you get used to it! I've added it to all my servers and laptops and I use it daily.
Sometimes, the model cannot find a solution and will result in unexpected output. 
In that case, try rewording your input, it often takes minor changes to get to a good solution.
And, if it really doesn't work, just add `-s` to get the best answer on StackOverflow straight into
the Terminal.


## Copy-Paste with mouse
When you are in "interactive mode" (after you press SPACE), if you want to copy-paste more than one line you can:

- press "p" to just print out the selected answer (easier to copy-paste)
- use block-select: With Ubuntu try holding `Ctrl+Alt` before you select, or `Alt+Cmd` if you're in iTerm on Mac
(thanks to @danielkop for this suggestion).

## Can I use it behind Proxy ?
Yes, you need to use `HTTP_PROXY` or `HTTPS_PROXY` environment variables.

For example, you could alias the proxy settings in your `~/.bash_profile`:

`alias how2="HTTPS_PROXY='your_proxy:8888' how2"`